Skip to main content

About your Search

20130113
20130121
STATION
SFGTV2 2
LANGUAGE
Search Results 0 to 1 of about 2 (some duplicates have been removed)
SFGTV2
Jan 14, 2013 6:00am PST
, and the economy. without it, things simply can't exist. woman: we have good health in this country, in part, because we have clean water. and we shouldn't forget that, and we shouldn't take it for granted. melosi: in the late 19th century, serious waterborne disease epidemics were having devastating effects. roy: but then, in the early 1900s, we began to treat our water. and since then, we've seen a rapid decline in the incidence of waterborne disease. narrator: most cities treat drinking water through filtration, chlorination, and sometimes ozonation to kill pathogens in the source supply. these are complex treatment plants that cost millions of dollars to operate, but are necessary for our wellbeing. the treatment of drinking water has been called one of the greatest public health achievements of the last century. the water infrastructure itself protects the treated water until it comes out of our taps. it's been since 1911, since we had an outbreak of cholera or typhoid in the united states. but that doesn't mean that it can't happen. it can happen. if we aren't on our guard all the time
Search Results 0 to 1 of about 2 (some duplicates have been removed)